OPERATE YOUR MOUSE POINTER WITHOUT USING THE MOUSE

If you got an mouse problem and you don't have an extra mouse to plug in
Then Don't take tension
I will give you suggestion

Press Left Alt + Left Shift + Num Lock Button + Ok  (or YES in windows 7)

with the help of Numeric Keypad e.g ( Press and Hold the following Keys )

7   8    9

4        6

1   2    3

For Normal Click Press 5 

Default
Left Alt + Left Shift + Num Lock